Printing-press.



No. 637,607. Patentedflov. 2|, I899. E. HETT.

PRINTING PRESS.

(Application filed Jan. 3, 1899.)

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No. 637,607. Patented N ov. 2|, I899.

' E. HETT.,

PRINTING PRESS.

(Applic tion filed Jan. 3, 1899.) v (No Model.) 4 Sheets-Sheet 2.

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No. 637,607. Patented Nov. 2|, I899. E. HETT; PRINTINGVPRESS; (Apphcahon filed Jan. 6 1899 4 Sheets-Sheet 3.

(No Model.)

R 0 T N E v W WITNESSES ATTORNEY? No. 637,607. Patnted Nov. 21, I899; E. HETT.

PRINTING PRESS.

(Application filed Jan. 8, 1899.)

4 Sheais-Sheet 4.

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INVENTOR WlTNESSES THE :wnms Pzrzns cu, rmo'ro vkn-ma.v WASHINGTON, n, c

UNITED STATES P TENT Cruise.

ED\VARD IIETT, OF NEW YORK, N. Y.

PRINTING-PRESS.

SPECIFICATION forming part of Letters IPatent No. 637,607, dated November 21, 1899.

Application filed January 3, 1899.

T0 aZZ whmn it may ooncerm Be it known that I, EDWARD HETT, of New York, (New Dorp,) in the county of Richmond and State of New York, have invented new and useful Improvements in Printing- Presses, of which the following is a specifica tion.

This invention relates to printing-presses, and especially to multicolor lithographic printing presses employing a series of print ing-surfaces and inking mechanisms therefor.

In the machine forming the subject of the present invention a series of impressiondrums, each having a circumferentially-continuous uniformly-elastic impression-surface and a series of uniform printing-forms are employed, each printing form having a circumferentially-continuous cylindrical printing-surface. Inking mechanisms are provided, one for each printing-surface, and when the machine is adapted for lithographic printing dampening mechanisms, one for each printing-surface, are arranged between adjacent printing-surfaces. The machine is f urther provided with mechanism to move the printing-surfaces toward and from the impression-surfaces, to move the printing-surfaces into and hold them in printing contact with the impression-drums in accurate and permanent relationship each printing-surface to all the others, with'mechanism for moving the inking and dampening devices toward and from the printing-surfaces, and with suitable paper supplying and delivering devices for supplying paper on the web.

In carrying out the general process of printing in this machine the paper is passed successively between the various corresponding printing-surfaces and their impression-surfaces of the entire series, whereby all the colors (for which separate printing-surfaces are prepared) are printed in substantiallyinstantaneous succession at one printing operation and with but one handling of the paper.

In the accompanying drawings I have shown a printingpress adapted for lithographic printing and having the various printing devices arranged circumferentially around a common driving mechanism; but I do not limit my invention to lithographic presses nor to this general circular arrangement.

In the drawings, Figure 1 is a side view of Serial No. 700,928. (No model.)

a printing-press constructed according to my invention. Fig. 2 is a side sectional elevation through the longitudinal center of the press. Fig. 3 is a sectional elevation through the center, taken transverselyof the machine. Fig. 4 is a side sectional elevation with some of the parts omitted and some broken away, showing especially the mechanism for moving the water distributing rollers toward and from the printing-surfaces.

The main driving-shaft 1 has asmall gear wheel 2 near each end, each of which meshes with a large gear-wheel 3 on the outer end of a secondary driving-shaft 4, Each of these secondary driving-shafts 4 has its bearings 8, running through the center of the machine and supported by the two main frames, which have two circular bushings for that purpose, as shown in the drawings.

The impression-surfaces are in the form of drums 9, each having, preferably, a circumfe rentially-continuo us elastic impression-surface. The shafts 10 of these drums 9 are supported in bearings in the main frame on each side and are provided at each end of the drum with a gear-wheel 11, all of the gears 11 being arranged circuxnferentially around and meshing with the large gear 7.

The printing-surfaces are in the form of thin tubes or cylinders removable from their supporting parts or form-cylinders, and each presents, preferably, a circu mferentially-continuous cylindrical printing-surface. These printing-forms 12 have their shafts 13 carried in sliding journal-boxes 14 and in a machine such as represented in the drawings are arranged in a circle around the impression surfaces or drums 9. These printing-forms 12 are driven, in contact with the impressiondrums, in accurate'and permanent relationship'each printing-surface to all the others by a system of gearing 15. (Shown in Fig. 3 of this application and fully described in a pending application, Serial No. 593,796, filed by me June 1, 1896.) V

The printing surfaces or forms 12 are moved toward and from the impression surfaces or each side of the machine adapted to turn about the axis of the shaft 8, a slotted disk 18, secured to each lever, toggle-levers 19, the center pins 20 of which work in the slots of the disk 18, one of the links of the togglelever being pivoted to the main frame of the press and the other link pivoted to the inner end of a pressure-bar 21, held in guides on the frame and which carries at its outer end the sliding box 14, sliding in a slot in the main frame of the press and constituting the bearings for the shaft 13 of the printingforms 12. and shown in myabove-mentioned application for patent, Serial No. 593,796.

Each inking mechanism 22 comprises an ink-trough 23, a group of ink-distributing rollers 24, preferably arranged on the outer sideof the printing surfaces or forms 12 away from the drums 9, and suitable devices to supply the ink-distributing rollers with ink from the trough 23, the whole beingcarried by frames 42, adapted to be movedtoward and from theprinting-surfaces bymeehanism fully described and shown in mysaid application, Serial No. 593,796. This mechanism includes a shaft 29, driven by any desired prime motor, the shaft having-a beveled gear atits upper end meshing with and driving a similar gear en the outer end of a short horizontal shaft 30, which has at its inneren-d a .worm which meshes with and drivesa central worm-wheel 31. This worm-wheel has a beveled gear on its outer face, which meshes with and drives small bevel-gears at the inner ends I moisture from the water-reservoir to the water-distributing rollers, the whole being carried by frames 34;, adapted to be moved toward and from the printing surfaces by mechanism fully described and shown in my said application, Serial N 0. 593,7 96. includes .an eccentric 35, driven-from 'anydesired prime motor, a shifting plate or wheel 3.6, centered with the main drum and shifted or oscillated to and fro around its center by the eccentric and carrying a series of pins 3-7,, which oscillat-e the inner ends of the longarms 3 8 of aseries of levers. These leversarecarried on rock-shafts 39, and the short arms 4-0 of the levers are connected by pivoted links" 41 to the frames 34,- which carry the water-. distributing rollers. Through this'trai-n-of This mechanism is fully described 7 This I .circumferentially-contin uous uniformly-clas tic impression-surface, of a series of uniform printing-forms having circumferentially-com tinuous cylindrical printing-surfaces, mech* anism, to move the printing-surfaces toward and from the impression -surface's. and to move the printingsurfaces into, and hold them in, printing contact withthe impression-drums in accurate and permanent relationship each printing -s urfa'ce to all the others, a series of inking mechanisms, one for each printing-surface, each inking mechanism including a group of ink-distributing rollers, and mechanism to move them toward and from the printingsurfaces, and suitable paper supplying and delivering devices for supply-ingpaper on aweb,substantiallyas described.

2. In a multicolor lithographic press, the combination with-a series of -impression-drums each having a circum-ferentiaily-continuous uniformly-elastic impression-surface, of a seriesof uniform printing-forms ha'Vingci-rcumferentially-continuous cylindrical printingsurfaces, mechanism to move the printingsurfaces toward and from the im'press-ion-su rfaces and to move the printing-surfaces into, and hold them in, printing contact with the impression-drums in accurate and permanent relationship each printing-surface to all the others, a series of inking mechanisms, one for each printing-surface, each inking mechanism including a group of ink-distributing rollers, and mechanism to move them toward and from the printing-surfaces, and a series of dampening mechanisms, one for each printing-surface, each dampening mechanism including a group of water-distributing rollers and mechanism to move them toward and from the printing-surface, and suitable paper supplying and delivering devices for supplying paper on a web, substantially as described.

In a multicolor-press, the combination with a-series of impression-d-rums each having a circumferentially-continuous uniformlyelastic impression-surface, of a series of uniform printing formsha-v'ihg circumferentially -'continuous cylindrical printing-surfaces, mechanism -to move the printing-surfaces toward and from the impression-surfaces and to move the printing-surfaces into, and holdth-em in, printing contact with the jirnpression-drumsin accurate and permanent IIO IIS

' estgeor relationship each printing-surface to all the others, a series of inking mechanisms, one

printing-surfaces, the said impression-drums and printing-forms being arranged circum for each printing-surface, each inking mechanism including a group of ink-distributing rollers arranged on the outer side of the printing-surfaces away from its drum, and mechanism to move them toward and from the printing-surface, and suitable paper supplying and delivering devices for supplying paper on the web, substantially as described.

4. In a multicolor lithographic press, the combination with a series of impressiondrums each having a circumferentially-continuous uniformly-elastic impression-surface, of a series of uniform printing-forms having circumferentially-continuous cylindrical lithographic printing surfaces, mechanism to move the printing-surfaces toward and from the impression surfaces and to move the printing surfaces into, and hold them in, printing contact with the impression-drums in accurate and permanent relationship each printing-surface to all the others, a series of inking mechanisms, one for each printingsurface, each inking mechanism including a group of ink-distributing rollers arranged on the outer side of the printing-surface away from its drum and mechanism to move them toward and from the printing-surface, and a series of dampening mechanisms, one for each printing-surface, arranged between adjacent printing-surfaces, each dampening mechanism including a group of water-distributing rollers and mechanism to move them toward and from the printing-surface, and suitable paper supplying and delivering devices for supplying paper on the web, substantially as described.

5. In a multicolor-press, the combination of a series of impression-drums each having a circumferentiallycontinuous uniformlyelastic impression-surface, of a series of uniform printing forms having circumferentially-continuous cylindrical printing-surfaces, the said impression-drums and printing-forms being arranged circumferentially around common driving mechanism, mechanism to move the printing-surfaces toward and from the impression-surfaces'and to move the printing-surfaces into, and hold them in, printing contact with the impression-drums in accurate and permanent relationship each printing-surface to all the others, a series of inking mechanisms, one for each printingsurface, each inking mechanism including a group of ink-distributing rollers, and mechanism to move them toward and from the printing-surfaces, and suitable paper supplying and delivering devices for supplying paper on a web, substantially as described.

6. In a multicolor lithographic press, the combination with a series of impressiondrums each having a circumferentially-continuous uniformly-elastic impression-surface, of a series of uniform printing-forms having circumferentially-continuous cylindrical ferentlally around common dr1v1ng mechanism, mechanism to move the printing-surfaces toward and from the impression-surfaces and to move the printing-surfaces into, and hold them in, printing contact with the impression-drums in accurate and permanent relationship each printing surface to all the others,'a series of inking mechanisms, one for each printing-surface, each inking mechanismincluding a group of ink-distributing rollers, and mechanism to move them toward and from the printing-surfaces, and a series of dampening mechanisms, one for each printing-surface, each dampening mechanism including a group of water-distributing rollers and mechanism to move them toward and from the printing-surface, and suitable paper supplying and delivering devices for supplying paper on a web, substantially as described.

7. In a multicolor-press, the combination with a series of impression-drums each hav inga circumferentially-continuous uniformlyelastic impression-surface, of a series of uni formprinting-formshavingcircumferentiallycontinuous cylindrical printing-surfaces, the said impression-drums and printing-forms being arranged circumferentially around common driving mechanism, mechanism to move the printing-surfaces toward and from the impression-surfaces and to move the printing-surfaces into, and hold them in, printing contact with the impression-drums in accurate and permanent relationship each printing-surface to all the others, a series of inking mechanisms, one for each printing= surface, each inking mechanism including a group of ink-distributing rollers arranged on the outer side of the printing-surfaces away from its drum, and mechanism to move them toward and from the printing-surface, and suitable paper supplying and delivering devices for supplying paper on the web, substantially as described.

8. In a multicolor lithographic press, the combination with a series of impressiondrums each having a circumferentially-continuous uniformly-elastic impression-surface, of a series of uniform printing-forms having circumferentially cOntinuous cylindrical lithographic-printing surfaces, the said impression-drums and printing-forms being arranged circumferentially around common driving mechanism, mechanism to move the printing-surfaces toward and from the impression-surfaces and to move the printingsurfaces into, and hold them in, printing contact with the impression-drums in accurate and permanent relationship each printingsurface to all the others, a series of inking mechanisms, one for each printing-surface, each inking mechanism including a group of ink-distributing rollers arranged on the outer IIO side of the printing-surface away from its drum and mechanism to move them toward and from the printing-surface, and a series Ofd-ampeni-ng mechanisms; one for each printing-surfacaarranged between adjacent print ing-surfaces, each dampening mechanism in; eluding a group of Water-distributing rollers and. mechanism 'to move them toward and from the printing-surface, and suitable paper supplying and delivering devices for supplyi ng pap'eibnihe web, substantially as de- 16 scribed. I v

In testimony whereof I have signed my name to this specification in the presence of twosiibscrib'ing witnesses. V

EDWARD "HETT;

Witnesses;

G. W. D-INARDEN, EDWIN SEGER'. 

